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Updated: May 20, 2026

In Vitro Biochemical Assays using Biotin Labels to Study Protein-Nucleic Acid Interactions
Published on: July 17, 2019
The use of biotin to demonstrate immunohistochemistry, Western blotting, and dot blots in university practical
Thomas James Millar1, Ronald Knighton, Jo-Anne Chuck
1University of Western Sydney, School of Science and Health, Penrith, NSW 2751, Australia.
Abstract:
Immunological detection of proteins is an essential method to demonstrate to undergraduate biology students, however, is often difficult in resource and time poor student laboratory sessions. This method describes a failsafe method to rapidly and economically demonstrate this technique using biotinylated proteins or biotin itself as targets for detection. This negates the need for a specific primary antibody, saving cost and time. In addition, the easily available and safe reagents allow the methods to be readily adopted without specialist technical expertise. As a result, staff can confidently transfer ownership of the task to the student so as to also develop scientific inquiry skills which promotes student motivation and engagement.
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